Efficiency of Glycolysis vs. Krebs Cycle

Glycolysis provides a quick burst of energy through the breakdown of glucose, producing pyruvate or lactate. The process then moves on to the slower Krebs cycle and oxidative phosphorylation, generating an additional 30 ATP but over a longer period. The transition from glycolysis to the Krebs cycle is gradual, noticeable in changes in heart rate and oxygen consumption during activities like a VO2 max test.